28 g of each of the following gases are taken at `27^(@)C` and 600 mm pressures. Which of these will have the least volume?
A. HBr
B. HCl
C. HF
D. HI
A. HBr
B. HCl
C. HF
D. HI
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Correct Answer – D
PV=nRT or `V=(nRT)/(P)`. As P and T are same for all given gases, `V prop n`. As `n=(w)/(M)`, n will be least for which M is maximum viz. HI.